Improvement in bag-machines



UNITED STATES PATENT OFFICEc NIeHoLAs BIEDINGEE, 0E CINCINNATI, CHIC.

IMPROVEMENT IN BAG-MACHINES.

Specification forming part of Letters Patent No. 140,342, dated July 1, 1873; application led June 9, 1873.

To all lwhom it may concern:

Be it known that I, NICHOLAS BIEDINGER, of Cincinnati, Hamilton county, Ohio, have invented a new and useful Improvement in Machinery for the Manufacture of Paper Bags, of which the following is a specification:

My invention relates to the class of paperbag machines which forms bags out of a continuous tube composed of two strips of paper of unequal width, having their edges overlapped and pasted together; and my device has especial reference to a provision for severing the upper and under plies of the tube in such a manner as that one shall protrude sufciently beyond the other to afford a suitable surplusage or long edge to be pasted and folded over upon the other or short edge. This object I effect by the instrumentality of a pair of drawing-rollers placed between the delivery end of the apron or belt which discharges the tube and the severing knife or knives, and of which one roller is caused to revolve forward and the other one backward, so that at proper intervals the upper and under sides of the paper are slipped upon each other. In order to insure this periodical slip- V ping action, each of said rollers is armed with one or more projections or protuberances of India rubber or other suitable material that will have a proper adhesive action upon the paper.

Figure l is a side elevation of the part of the machine which embodies my improvement. Fig. 2 is a longitudinal section ot' the same. Fig. 3 is a diagram representing the severed end of the paper-tube. Fig. 4 is a diagram showing the long end folded over the short end. Y

A represents an endless belt or apron stretched around suitable rollers B C, one of which is the driver. D and E are two other rollers, so located as to receive between them the advancing end of the papertube. In the present illustration each roller, D and E, corresponds in circumference to the desired length of the bag to be made, and the periphery of each is armed with a protuberance or pad, F or F', preferably of India rubber. These pads are so located upon their respective cylinders as to impinge at the same instant on opposite sides of the tube, and said rollers D and E are so connected by gearing G H I J with the driver that, While one rollerin the present illustration the lower one, D is revolving forward, the other roller, E, is revolving backward. K represents a customary severing-knife, and L a customary clapboard.

The parts being set in motion, the advancing tube becoming at the proper moment nipped between the protuberances F and F', has its upper ply or layer pressed 4back while its lower ply continues to advance. This 0ccurrin g just as the clapboard is advancing to sever the tube, the result is that the lower side of the severed portion which forms a bag is left longer than the upper, so as to afford a pro jecting portion or long edge, M, (see Fig. 3,) which in the subsequent operation is pasted over the short edge N (see Fig. 4) by any customary or approved instrumentality.

The above-described preferred form of my device may be varied from in non-essential particulars; for example, the rollers D and E may be of double the diameter stated, and have each two pads on opposite sides, and one may slightly exceed or fall behind the diameter ofthe other, so as to allow either the drawing or retarding action to preponderate it' desired.

I claim as new and of my invention- The described arrangement of two oppositely-rotating drawing-rollers, D E, between the delivery end of the apron A and the severingknife K, said rollers having the eoactiug pads or protubera-nces F F', substantially as and for the purpose set forth.

In testimony of which invention I hereunto set my hand.

NICHOLAS BIEDINGER.

Attest: o

GEO. H. KNIGHT, WALTER H. KNIGHT. 

